cleaning sludge and rust from an engine
03-02-2007, 01:43 PM
#1
Thread Starter
Join Date: Feb 2007
Location: Michigan
Posts: 31
cleaning sludge and rust from an engine
ok i pulled my 302 from my 85 last weekend and there is ALOT of sludge in this thing it almost made me think it was unrebuildable but the cylinder walls are great. what would be the best way to get all that crap off without spending a fortune. Mabey filling a tub with heavy duty degreaser? and sandblasting the block and heads for the rust? or will the sand get into places that will be hard to get it out of and f-up the engine when i go to start it? help please.....
03-02-2007, 02:14 PM
#2
5th Gear Member
Join Date: Feb 2004
Location:
Posts: 2,028
RE: cleaning sludge and rust from an engine
Take the block to an engine machine shop and have it tanked.This will remove everything bad.Sand blasting will require you to super clean everything and the chance of leaving something behind is great.
This isn't the place to skimp on cash outlay.Buying enough degreaser to do the job will cost quite a bit and trying to get into ALL the oil galleries would be difficult.There's also the question of where to get rid of the used chemicals.If you get caught disposing of hazmat improperly you will be in a lot of trouble.If it gets into a waterway you will be in even more.
The best way to do this is to take the engine to a good engine machine shop,have it tanked,bore the cylinders,and align bore/hone the crank and cam journals.After this is done you will have a pretty much new engine block to build as you see fit with no worries about what might break loose and ruin something expensive.
This isn't the place to skimp on cash outlay.Buying enough degreaser to do the job will cost quite a bit and trying to get into ALL the oil galleries would be difficult.There's also the question of where to get rid of the used chemicals.If you get caught disposing of hazmat improperly you will be in a lot of trouble.If it gets into a waterway you will be in even more.
The best way to do this is to take the engine to a good engine machine shop,have it tanked,bore the cylinders,and align bore/hone the crank and cam journals.After this is done you will have a pretty much new engine block to build as you see fit with no worries about what might break loose and ruin something expensive.
03-02-2007, 02:27 PM
#3
Thread Starter
Join Date: Feb 2007
Location: Michigan
Posts: 31
RE: cleaning sludge and rust from an engine
well my dad is a sales manager and a chemical company and he can get me the industrial machine degreaser for free, by the gallon, would that work for the heads at least, i wasnt planning on putting the block in there
03-02-2007, 02:45 PM
#4
6th Gear Member
Join Date: Jan 2006
Location: new jersey
Posts: 6,635
RE: cleaning sludge and rust from an engine
he is right take the engine to a mechine shop and have it dipped and cleaned up you wont regret spending the money at all my buddy sent out his 78 vette motor came back and it looked like new he sent this thing out it was leaking oil everywhere you could think of and then some looked so nasty got it back looked like a bran new motor
03-02-2007, 04:44 PM
#7
Thread Starter
Join Date: Feb 2007
Location: Michigan
Posts: 31
RE: cleaning sludge and rust from an engine
well couple hundred for the boring/honing/cleaning. plus rebuild kit-300, uper engine rebuild kit-300, new maniforld/ carb-600 and other little things, and the long block has a 60,000 mile warrenty but once again i dunno what one would be better
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